10400305 has 8 divisors (see below), whose sum is σ = 12504744. Its totient is φ = 8304000.

The previous prime is 10400303. The next prime is 10400309. The reversal of 10400305 is 50300401.

10400305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1201216 + 9199089 = 1096^2 + 3033^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10400305 - 2¹ = 10400303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10400303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275 + ... + 4735.

It is an arithmetic number, because the mean of its divisors is an integer number (1563093).

Almost surely, 2^10400305 is an apocalyptic number.

It is an amenable number.

10400305 is a deficient number, since it is larger than the sum of its proper divisors (2104439).

10400305 is an equidigital number, since it uses as much as digits as its factorization.

10400305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 10400305 is about 3224.9503872153. The cubic root of 10400305 is about 218.2807104044.

Adding to 10400305 its reverse (50300401), we get a palindrome (60700706).

The spelling of 10400305 in words is "ten million, four hundred thousand, three hundred five".